Method of sectionalizing tubes



Jan. 1, 1935. L. LUDINGTON METHOD OF SECTI ONALIZING TUBES OriginalFiled April 8, 1952 INVENTOR L awreme Lludz ng'tm,

ATTORNEYS Patented 1935 NITED STATES t 1,986,587 PATENT OFFICE METHOD OFSECTIdNALIZING TUBES f Lawrence L. Ludington, Muncie, Ind., assignor toBall Brothers Company, Muncie,

poration of Indiana 1nd,, a cor- Original application April 8, 1932,Serial No.

604,051. Divided and this app ication September 28, 1934, Serial No.745,922

Claims. (01. 164-139 My invention relates to a newrnethod of treatingexpansible tubes whereby axial sections may be separated therefrom. l i

The present application is a division from my 5 copending application,Serial Number 604,051: filed 1O matic and in partial vertical section,of mech a-,

;April 8, 1932. V

t The accompanying rawing illustrates my invention: i l i Fig. l is aperspective view, largely diagramnism used in the practiceof mymethod;

Fig. 2 is an axial section of the rotating carrier and enclosedexpansible tube to be operated upon;

and r V Fig. 3 is a diagrammatic elevation of tube severing means. t 7My new method involves theradialexpansion ,by centrifugal force of thetube to be operated upon and the subsequent severance of a desired axiallength while the tube is under stress of 'said centrifugal force. l

, .In the practice of my method, the expansible,

tube 10, say of rubber gasket-forming material, is

v or

placed within a rotatable tubular carrier 11 the internal diameter ofwhich is slightly greater than the normal external diameter of the tube10, with one end of tube 10,to the desired severing length, protrudedfrom carrier tube 11. There-,

upon the carrier tube 11 is rotated, by any suitable means such as motor12, at a speed sufficient "to cause tube 10 to radially expandinto tube11, thereby creating sufiicient frictional contact between the exteriorof tube 10 and the interior of rier tube 11, asby means of plunger 14,and the carrier tube 11 to partake of the rotary speed of tube 11 and toresist the necessary severing force applied to-tube l0.

Thereupon a suitable severing force, as by means of the cutter 13, isapplied radially to tube 10 at the desired point in itslength tosever anaxial length from tube 10. l Thereupon tube 10 is axially advanced incarsevering operation repeated.

Rotation of tube 19 during the severing, opera- 1 tion causes itsprotruding end to expand, and, as.

the severance is completed, by the cutter 13, the combined centrifugalforces acting within the severed portion and the axial component of theknife force, cause the severed whirling portion of the tube 10 to jumpaxially away from the carrier tube 11 so that the severed portion oftube 10 may be caught upon an appropriately placed receiver by which itwillbe caught and held, the saidsevered portion contracting'thereon asrotation ceases.

severed section.

I claim as myinventionz 1. The methodof formingannular sections whichcomprises telescopinga tube of expansible material within a carrier tuberotatable about ,its axis, rotating said two tubes simultaneouslyaboutthe tube axes at an angular velocity suffi cient to cause theexpansible tube to centrifugally swell into the carrier tube, andthereupon severing an axialsection fromfsaid expansible tube while saidtube is centrifugally stressed.

2. The method of forming annular sections which comprises telescopingatube of expansible material within a carrier tube rotatable about itsaxis, rotating said two tubes simultaneously about the tube axes at anangular velocity sufiicient to cause the expansibletube to centrifugallyswell into the carrier tube, and traversing a cutter through the wall ofthe expansible tube.

3. A method of forming annular sections which comprises telescoping atube of expansible material within a carrier tube rotatable about itsits axis, rotating said two tubes simultaneouslyv about the tube axes atan angular velocity suflicient to cause the expansible tube tocentrifugally swell into the carrier tube, traversing a cutter throughthe wall of the flexible tube at the mouth of the carrier tube, andaligning a receiving element with the projected end of the flexible tubeprior to cutter traverse, in the path of projection of the severedsection. i

5. The method of forming annular sections which comprises telescoping atube of expansible material within a carrier tube rotatable about itsaxis, rotating said two tubes simultaneously about the tube axes at anangular velocity sufficient to cause the expansible tube tocentrifugally projecting an end of theexpansible tube fromthecarriertube and traversing a cutter through "the wall of theprojectedportion of the expansible tube, and aligning a receiving element withthe projected end of the flexible tube prior to cutter traverse, in thepath of projection of the LAWRENCE LUDINGTON.

swell into the carrier tube, alternatelyaxially

